Optimal angle of magnetic field for magnetic bubblecade motion

Abstract Unidirectional motion of magnetic structures such as the magnetic domain and domain walls is a key concept underlying next-generation memory and logic devices. As a potential candidate of such unidirectional motion, it has been recently demonstrated that the magnetic bubblecade—the coherent...

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Autores principales:	Duck-Ho Kim, Kyoung-Woong Moon, Sang-Cheol Yoo, Dae-Yun Kim, Byoung-Chul Min, Chanyong Hwang, Sug-Bong Choe
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/81eed8caed4e42e0b74877575724de0d
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spelling	oai:doaj.org-article:81eed8caed4e42e0b74877575724de0d2021-12-02T12:32:56ZOptimal angle of magnetic field for magnetic bubblecade motion10.1038/s41598-017-03832-42045-2322https://doaj.org/article/81eed8caed4e42e0b74877575724de0d2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03832-4https://doaj.org/toc/2045-2322Abstract Unidirectional motion of magnetic structures such as the magnetic domain and domain walls is a key concept underlying next-generation memory and logic devices. As a potential candidate of such unidirectional motion, it has been recently demonstrated that the magnetic bubblecade—the coherent unidirectional motion of magnetic bubbles—can be generated by applying an alternating magnetic field. Here we report the optimal configuration of applied magnetic field for the magnetic bubblecade. The tilted alternating magnetic field induces asymmetric expansion and shrinkage of the magnetic bubbles under the influence of the Dzyaloshinskii-Moriya interaction, resulting in continuous shift of the bubbles in time. By examining the magnetic bubblecade in Pt/Co/Pt films, we find that the bubblecade speed is sensitive to the tilt angle with a maximum at an angle, which can be explained well by a simple analytical form within the context of the domain-wall creep theory. A simplified analytic formula for the angle for maximum speed is then given as a function of the amplitude of the alternating magnetic field. The present results provide a useful guideline of optimal design for magnetic bubblecade memory and logic devices.Duck-Ho KimKyoung-Woong MoonSang-Cheol YooDae-Yun KimByoung-Chul MinChanyong HwangSug-Bong ChoeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Duck-Ho Kim Kyoung-Woong Moon Sang-Cheol Yoo Dae-Yun Kim Byoung-Chul Min Chanyong Hwang Sug-Bong Choe Optimal angle of magnetic field for magnetic bubblecade motion
description	Abstract Unidirectional motion of magnetic structures such as the magnetic domain and domain walls is a key concept underlying next-generation memory and logic devices. As a potential candidate of such unidirectional motion, it has been recently demonstrated that the magnetic bubblecade—the coherent unidirectional motion of magnetic bubbles—can be generated by applying an alternating magnetic field. Here we report the optimal configuration of applied magnetic field for the magnetic bubblecade. The tilted alternating magnetic field induces asymmetric expansion and shrinkage of the magnetic bubbles under the influence of the Dzyaloshinskii-Moriya interaction, resulting in continuous shift of the bubbles in time. By examining the magnetic bubblecade in Pt/Co/Pt films, we find that the bubblecade speed is sensitive to the tilt angle with a maximum at an angle, which can be explained well by a simple analytical form within the context of the domain-wall creep theory. A simplified analytic formula for the angle for maximum speed is then given as a function of the amplitude of the alternating magnetic field. The present results provide a useful guideline of optimal design for magnetic bubblecade memory and logic devices.
format	article
author	Duck-Ho Kim Kyoung-Woong Moon Sang-Cheol Yoo Dae-Yun Kim Byoung-Chul Min Chanyong Hwang Sug-Bong Choe
author_facet	Duck-Ho Kim Kyoung-Woong Moon Sang-Cheol Yoo Dae-Yun Kim Byoung-Chul Min Chanyong Hwang Sug-Bong Choe
author_sort	Duck-Ho Kim
title	Optimal angle of magnetic field for magnetic bubblecade motion
title_short	Optimal angle of magnetic field for magnetic bubblecade motion
title_full	Optimal angle of magnetic field for magnetic bubblecade motion
title_fullStr	Optimal angle of magnetic field for magnetic bubblecade motion
title_full_unstemmed	Optimal angle of magnetic field for magnetic bubblecade motion
title_sort	optimal angle of magnetic field for magnetic bubblecade motion
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/81eed8caed4e42e0b74877575724de0d
work_keys_str_mv	AT duckhokim optimalangleofmagneticfieldformagneticbubblecademotion AT kyoungwoongmoon optimalangleofmagneticfieldformagneticbubblecademotion AT sangcheolyoo optimalangleofmagneticfieldformagneticbubblecademotion AT daeyunkim optimalangleofmagneticfieldformagneticbubblecademotion AT byoungchulmin optimalangleofmagneticfieldformagneticbubblecademotion AT chanyonghwang optimalangleofmagneticfieldformagneticbubblecademotion AT sugbongchoe optimalangleofmagneticfieldformagneticbubblecademotion
_version_	1718393928915353600

Optimal angle of magnetic field for magnetic bubblecade motion

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